ExecPath.java

/**
 * Copyright 2016-2017 Seznam.cz, a.s.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cz.seznam.euphoria.inmem;

import cz.seznam.euphoria.core.client.graph.DAG;
import cz.seznam.euphoria.core.client.operator.Operator;

/**
 * A series of transformations with single output operator.
 */
class ExecPath {

  /** A DAG of operators. */
  private final DAG<Operator<?, ?>> dag;
  

  private ExecPath(DAG<Operator<?, ?>> dag) {
    this.dag = dag;
  }


  /**
   * Create new ExecPath.
   */
  static ExecPath of(DAG<Operator<?, ?>> dag) {
    return new ExecPath(dag);
  }

  public DAG<Operator<?, ?>> dag() {
    return dag;
  }

}